Fenoxaprop-p-ethyl etherification synthesis reaction kettle

Abstract

The utility model discloses a fenoxaprop-p-ethyl etherification synthesis reaction kettle, and relates to the technical field of chemical engineering, the fenoxaprop-p-ethyl etherification synthesis reaction kettle comprises a reaction kettle body, the top of the reaction kettle body is provided with a top cover, a driving rotating rod drives a mounting block and a fixed rod to rotate, and an inclined connecting rod rotates around a shaft along with the mounting block and the fixed rod; a wavy first stirring blade with an S-shaped cross section on the outer wall cuts and disturbs a multiphase system to generate a complex fluid mechanics effect, so that the shearing force and the turbulence degree are enhanced; meanwhile, the spiral blades on the mounting rods push the materials to axially flow and are matched with the radial flow of the first stirring blades to form a three-dimensional stirring effect, the blade-shaped edges enhance the solid particle cutting capacity, reduce deposition at the bottom of the kettle, improve the tannin extraction rate and reduce the generation amount of byproducts, and the two groups of reverse stirrers form strong turbulence and vortexes, so that the tannin extraction efficiency is improved. A stirring dead zone is broken, the contact area of an organic phase and a water phase is increased, and the mass transfer efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical engineering technology, specifically to a reaction vessel for the etherification synthesis of quizalofop-p-ethyl. Background Technology

[0002] Quizalofop-P-ethyl, a highly effective, low-toxicity, and widely used herbicide, plays a crucial role in modern agricultural production. Its etherified synthetic products exhibit unique advantages in structure and performance, which are significant for improving weed control efficacy and optimizing the mechanism of action. In-depth research into quizalofop-P-ethyl ethers, from their chemical structure and synthetic processes to practical applications, will help promote continuous innovation in weed control technology in the agricultural sector, meeting the current demand for efficient and safe pesticides in green agricultural development.

[0003] Etherification reactions often involve multiphase systems of liquid-liquid or liquid-solid (such as phenolic solid feedstocks and catalysts). Traditional anchor or propeller-type agitators can only provide axial macroscopic flow and lack sufficient shear force to break up droplet aggregates or suspended solid particles, resulting in significant stratification of the organic and aqueous phases and solid deposition at the bottom of the reactor. For example, in the Williamson ether synthesis pathway, when phenolic compounds react with haloalkanes in a two-phase system, traditional stirring requires a long time to reach a basic mixing state, and the low mass transfer efficiency leads to low tannin extraction rates and increased byproduct formation. Utility Model Content

[0004] The purpose of this invention is to provide a reaction vessel for the etherification synthesis of quizalofop-p-ethyl to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides a reaction vessel for the etherification synthesis of quizalofop-p-ethyl, comprising a reaction vessel body, a top cover mounted on the top of the reaction vessel body, a servo motor mounted on the top cover of the reaction vessel body, a rotating rod connected to the drive end of the servo motor, a mounting block fixedly mounted at the bottom end of the rotating rod, two fixing rods fixedly mounted at the bottom of the mounting block, an inclined connecting rod fixedly mounted on the fixing rod, a first stirring blade fixedly mounted on the outer wall of the connecting rod, the two sides of the first stirring blade being wavy, and the cross-section of the first stirring blade being S-shaped; and a mounting rod fixedly mounted on the bottom end of the two opposing connecting rods, the outer wall of the mounting rod being equipped with helical blades.

[0006] Furthermore, the number of connecting rods on the fixed rod is set to four, and every four connecting rods form a group of stirrers with the first stirring blade, and the two groups of stirrers are tilted in opposite directions.

[0007] Furthermore, stirring rods are fixedly installed at the bottom ends of two adjacent connecting rods facing opposite directions, and the stirring rods are designed to be arc-shaped.

[0008] Furthermore, the edge of the first stirring blade is shaped like a knife.

[0009] Furthermore, a protective frame is fixedly installed on the top of the top cover, and the protective frame is fitted over the outside of the servo motor.

[0010] Furthermore, both the top cover and the reactor body are fixedly installed with fixing blocks, and the top of the fixing blocks is threaded with fixing bolts.

[0011] Furthermore, a feed pipe is provided on the top of the top cover, and a discharge pipe is fixedly installed on the bottom of the reactor body. Both the feed pipe and the discharge pipe are threaded with sealing caps.

[0012] Furthermore, multiple support legs are installed on the side wall of the reactor body, and the multiple support legs are arranged in a triangular shape.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this utility model,

[0015] When the servo motor starts, the drive rotor rotates the mounting block and fixed rod, causing the inclined connecting rod to rotate around its axis. The wave-shaped first stirring blades, with an S-shaped cross-section on their outer wall, cut and disturb the multiphase system, generating complex hydrodynamic effects and enhancing shear force and turbulence. Simultaneously, the spiral blades on the mounting rod propel the material axially, working in conjunction with the radial flow of the first stirring blades to create a three-dimensional stirring effect. This design improves the shearing and breaking capacity for droplet agglomerates and suspended particles, such as shortening the mixing time in Williamson ether synthesis reactions. The blade-like edges enhance the ability to cut solid particles, reducing sedimentation at the bottom of the vessel, increasing tannin extraction rate, and reducing byproduct formation. The two sets of counter-current stirrers create strong turbulence and vortices, breaking up the stirring dead zone, increasing the contact area between the organic and aqueous phases, and improving mass transfer efficiency.

[0016] 2. In this invention, the arc-shaped stirring rod is located at the bottom end of two sets of opposing inclined connecting rods. When the stirrer rotates, it can directly scrape and agitate the material at the bottom of the reactor. When processing a liquid-solid system of phenolic solid raw materials and catalysts, it can reduce the amount of solid deposits at the bottom of the reactor, avoiding uneven reaction caused by solid accumulation. Under the same reaction conditions, after installing the arc-shaped stirring rod, the concentration deviation of solid particles in the bottom region is reduced, significantly improving the uniformity of the reaction. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0019] Figure 3 for Figure 1 Enlarged view of the structure at point A in the middle;

[0020] Figure 4 for Figure 1 Enlarged view of the structure at point B in the middle.

[0021] In the diagram: 1. Reactor body; 2. Servo motor; 3. Mounting block; 4. Fixing rod; 5. Connecting rod; 6. First stirring blade; 7. Mounting rod; 8. Spiral blade; 9. Stirring rod; 10. Fixing block; 11. Feed pipe; 12. Discharge pipe; 13. Protective frame. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 This utility model provides a technical solution:

[0024] See Figures 1-4 As shown, a reactor for the synthesis of quizalofop-P-ethyl etherification includes a reactor body 1, a top cover mounted on the top of the reactor body 1, a servo motor 2 mounted on the top cover of the reactor body 1, a rotating rod connected to the drive end of the servo motor 2, a mounting block 3 fixedly mounted at the bottom end of the rotating rod, two fixing rods 4 fixedly mounted at the bottom of the mounting block 3, an inclined connecting rod 5 fixedly mounted on the fixing rod 4, a first stirring blade 6 fixedly mounted on the outer wall of the connecting rod 5, both sides of the first stirring blade 6 being wavy, and the cross-section of the first stirring blade 6 being S-shaped; and a mounting rod 7 fixedly mounted on the bottom end of the two opposing connecting rods 5, with a spiral blade 8 mounted on the outer wall of the mounting rod 7.

[0025] When the servo motor 2 starts, the drive end drives the rotating rod to rotate, which in turn causes the mounting block 3 to rotate synchronously. The fixing rod 4 at the bottom of the mounting block 3 rotates together, and the connecting rod 5, which is inclined on the fixing rod 4, also begins to rotate around the axis. At this time, the first stirring blade 6 on the outer wall of the connecting rod 5 plays a role. Its wavy side continuously cuts and disturbs the liquid-liquid or liquid-solid multiphase system during rotation. Since the cross-section of the first stirring blade 6 is S-shaped, it can generate complex hydrodynamic effects during rotation, enhancing the shear force and turbulence on the material. At the same time, the spiral blade 8 on the mounting rod 7 rotates with the rotation of the connecting rod 5. The spiral blade 8 pushes the material to flow axially, which cooperates with the radial flow generated by the first stirring blade 6 to form a three-dimensional stirring effect.

[0026] The wavy side and S-shaped cross-section design of the first stirring blade 6 significantly enhances its ability to shear and break up droplet agglomerates and suspended solid particles. Compared with traditional impellers, it can achieve uniform dispersion of multiphase materials in a shorter time. For example, in the Williamson ether synthesis reaction, the time to reach a basic mixed state can be shortened.

[0027] The blade-like design of the first stirring blade 6 further enhances the cutting effect on solid particles, reduces sedimentation at the bottom of the vessel, allows phenolic solid raw materials to participate more fully in the reaction, increases tannin extraction rate, and reduces the amount of by-products generated.

[0028] Two sets of agitators tilted in opposite directions generate opposing fluid flows when rotating, creating stronger turbulence and vortices, effectively breaking the dead zone of traditional agitation. The axial pushing action of the helical blade 8 combined with the radial disturbance of the first agitator blade 6 creates a three-dimensional mixing effect, increasing the contact area between the organic and aqueous phases by more than 30%, and significantly improving mass transfer efficiency.

[0029] See Figure 1 The number of connecting rods 5 on the fixed rod 4 is set to four. Every four connecting rods 5 and the first stirring blade 6 form a group of stirrers. The two groups of stirrers are tilted in opposite directions.

[0030] Each fixed rod 4 is equipped with four connecting rods 5, forming a four-blade structure for the single agitator, which increases the contact area and points of action with the material. During rotation, the four first stirring blades 6 can simultaneously apply shear force to droplets or solid particles, improving the crushing efficiency by approximately 30% compared to traditional two-blade or three-blade structures.

[0031] The two sets of agitators are tilted in opposite directions. When the servo motor 2 drives the rotor to rotate, the two sets of agitators generate fluid forces in opposite directions. This counter-current effect creates a strong turbulent zone between the two sets of blades, where droplets and solid particles are repeatedly pulled and squeezed, further enhancing the crushing effect. For example, in processing liquid-solid systems of phenolic solid raw materials and catalysts, the average particle size of solid particles can be reduced from 50 μm to below 20 μm, significantly increasing the reaction contact area.

[0032] See Figure 1 Two adjacent connecting rods 5 with opposite directions are fixedly installed with stirring rods 9 at their bottom ends. The stirring rods 9 are designed to be arc-shaped.

[0033] The arc-shaped stirring rod 9 is located at the bottom of the two sets of counter-tilted connecting rods 5. When the stirrer rotates, it can directly scrape and agitate the material at the bottom of the reactor. In processing liquid-solid systems of phenolic solid raw materials and catalysts, it reduces the amount of solid deposits at the bottom of the reactor, avoiding uneven reaction caused by solid accumulation. Under the same reaction conditions, after installing the arc-shaped stirring rod 9, the concentration deviation of solid particles in the bottom region is reduced, significantly improving the uniformity of the reaction.

[0034] See Figure 1 The edge of the first stirring blade 6 is set in a knife-edge shape.

[0035] The blade-like edge generates stronger shearing force, effectively breaking up droplet agglomerates in liquid-liquid systems or solid particles in liquid-solid systems. For example, when phenolic solid feedstocks are mixed with catalysts, the breaking efficiency is improved compared to ordinary blades, significantly increasing the contact area of ​​reactants and improving the reaction rate.

[0036] See Figure 1 A protective frame 13 is fixedly installed on the top of the top cover, and the protective frame 13 is fitted over the outside of the servo motor 2.

[0037] Preventing material splashing and steam condensate dripping into the servo motor 2 during the reaction process reduces the incidence of short-circuit failures caused by liquid intrusion. Avoiding external debris, such as tools and parts, from accidentally impacting the motor reduces the risk of damage to the motor casing, extending motor lifespan and maintenance cycles.

[0038] See Figure 1 Both the top cover and the reactor body 1 are fixedly installed with fixing blocks 10, and the top of the fixing blocks 10 are threaded with fixing bolts.

[0039] Both the top cover and the reactor body 1 are fixedly installed with fixing blocks 10. The top of the fixing blocks 10 is threaded with fixing bolts. In this way, the fixing blocks 10 can provide a stable connection base for the top cover and the reactor body 1. The threaded fastening action of the fixing bolts can realize the detachable connection between the two, which is convenient for the installation, disassembly and maintenance of the internal components of the reactor. At the same time, the threaded connection has good sealing performance, which can effectively prevent material leakage or gas overflow during the reaction process, ensuring the safety and stability of the reaction environment. In addition, the fixing blocks 10 have high structural strength and can withstand the pressure inside the reactor, ensuring the reliability of equipment operation.

[0040] See Figure 1 The top of the top cover is provided with a feed pipe 11, and the bottom of the reactor body 1 is fixedly installed with a discharge pipe 12. Both the feed pipe 11 and the discharge pipe 12 are threaded with sealing caps.

[0041] The top feed pipe 11 enables high-level feeding, such as gravity conveying of liquids. The bottom discharge pipe 12 facilitates the complete discharge of material residue, which is less than side discharge. It is especially suitable for processes that require complete unloading, avoiding the risk of deterioration caused by material retention.

[0042] By opening and closing the sealing cap, the stages of feeding, reaction, and discharging can be strictly controlled.

[0043] See Figure 1 Multiple support legs are installed on the side wall of the reactor body 1, and the multiple support legs are arranged in a triangular shape.

[0044] The triangular layout utilizes the principle of geometric stability, which can increase the anti-tipping moment of the reactor by 70%. When subjected to eccentric loads, such as the lateral force generated during stirring, the risk of tilting is reduced by 65% ​​compared to four-corner support, making it especially suitable for equipment with a high center of gravity.

[0045] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A reaction vessel for the synthesis of quizalofop-P-ethyl ether, comprising a reaction vessel body (1), wherein a top cover is installed on the top of the reaction vessel body (1), characterized in that: A servo motor (2) is installed on the top cover of the reactor body (1). The drive end of the servo motor (2) is connected to a rotating rod. A mounting block (3) is fixedly installed at the bottom end of the rotating rod. Two fixing rods (4) are fixedly installed at the bottom of the mounting block (3). An inclined connecting rod (5) is fixedly installed on the fixing rod (4). A first stirring blade (6) is fixedly installed on the outer wall of the connecting rod (5). Both sides of the first stirring blade (6) are wavy. The cross-section of the first stirring blade (6) is S-shaped. Mounting rod (7), which is fixedly installed at the bottom end of two opposing connecting rods (5), and a spiral blade (8) is installed on the outer wall of the mounting rod (7).

2. The reaction vessel for the etherification synthesis of quizalofop-p-ethyl as described in claim 1, characterized in that: The number of connecting rods (5) on the fixed rod (4) is set to four. Every four connecting rods (5) and the first stirring blade (6) form a set of stirrers, and the two sets of stirrers are tilted in opposite directions.

3. The reaction vessel for the etherification synthesis of quizalofop-p-ethyl as described in claim 2, characterized in that: Two adjacent connecting rods (5) with opposite directions are fixedly installed with stirring rods (9) at their bottom ends. The stirring rods (9) are set in an arc shape.

4. The reaction vessel for the etherification synthesis of quizalofop-p-ethyl as described in claim 3, characterized in that: The edge of the first stirring blade (6) is set in a knife-edge shape.

5. The reaction vessel for the etherification synthesis of quizalofop-p-ethyl as described in claim 4, characterized in that: A protective frame (13) is fixedly installed on the top of the top cover, and the protective frame (13) is fitted over the outside of the servo motor (2).

6. The reaction vessel for the etherification synthesis of quizalofop-p-ethyl as described in claim 5, characterized in that: Both the top cover and the reactor body (1) are fixedly installed with fixing blocks (10), and the top of the fixing blocks (10) is threaded with fixing bolts.

7. The reaction vessel for the etherification synthesis of quizalofop-p-ethyl as described in claim 6, characterized in that: The top of the top cover is provided with a feed pipe (11), and the bottom of the reactor body (1) is fixedly installed with a discharge pipe (12). Both the feed pipe (11) and the discharge pipe (12) are threaded with sealing caps.

8. The reaction vessel for the etherification synthesis of quizalofop-p-ethyl as described in claim 7, characterized in that: The side wall of the reactor body (1) is equipped with multiple support legs, which are arranged in a triangular shape.

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